Machine Learning Engineer II

Posted Yesterday
Chicago, IL, USA
Hybrid
108K-136K Annually
Junior
Cloud • Real Estate • Software • PropTech
Help us revolutionize real estate services.
The Role
Design, deploy, fine-tune, and evaluate LLMs and ML models to automate and optimize property service workflows. Improve data quality and ETL, source new data, build scalable AI/ML solutions (copilots, voice assistants, work order processing), collaborate cross-functionally, and maintain data confidentiality.
Summary Generated by Built In
Lessen is the tech-enabled, end-to-end property service provider that is transforming how commercial and residential real estate services are delivered and managed at scale. Lessen’s technology platform provides data-driven insights that unlock key growth opportunities for the entire real estate ecosystem—including investors, owners, managers, and service providers. The company leverages a network of over 30,000 vetted, qualified vendors (Lessen Affiliates) serving clients with over 1 million properties and completing more than 3.5 million work orders annually across an expanding range of services. Lessen, LLC is a venture-backed, privately held company with offices in Scottsdale and Chicago. 

The Machine Learning Engineer II role is part of the Technology Team, which is responsible for providing industry-leading machine learning-based tools or processes to the Company, which provide a competitive advantage and efficiency. You will work closely with cross-functional teams to build intelligent systems that solve real-world problems using machine learning, deep learning, and data science techniques. 
 
This is a hybrid position, Tuesday and Thursday in the office.

What You'll Do:

    • Design, deploy, fine-tune, and evaluate large language models (LLMs); develop effective prompting strategies to optimize performance for various business use cases. 

    • Improve data quality by cleaning the company’s data and sourcing information from new data sources. 

    • Use machine learning/ deep learning to enhance and automate processes in Lessen proprietary tools. 

    • Translate business problems into scalable AI/ML solutions, particularly using LLMs, in areas 

    • such as copilot systems, intelligent voice assistants, and work order processing optimization. 

    • Collaborate cross-functionally with teams to develop, refine, and scale data-driven procedures and workflows. 

    • Foster a positive team environment. 

    • Ensure confidentiality and integrity of internal and external data. 

    • Perform ad-hoc projects and other duties as assigned. 

You Should Have:

     
    Minimum Qualifications 
     
    • PhD or Master’s degree in Math, Physics, Statistics, Computer Science, or other related fields 

    • 1-3 years of experience as a data scientist, working closely within a business 

    • Strong mathematical and statistical skills 

    • Programming Languages: SQL, Python 

    • Understanding of ETL tools and database architecture 

    • Familiarity with pytorch, pandas and cloud platform like AWS, Azure and GCP 

    • Prompt engineering experience 

    • Experience using a machine learning framework e.g. scikit-learn, pytorch or similar 

    • Experience with a statistical software (e.g. R, SAS) 

    • Experience with natural language processing 

    • Advanced knowledge of Data Warehousing and BI best practices 

    • Experience with big data tools such as Spark, Hadoop, etc. 

    • Experience with Tableau or Superset  

    • These are the professional skills we would expect from an individual fully established in this role.  

      • Verbal Communication – Proficient  

      • Written Communication – Proficient  

      • Teamwork – Advanced 

      • Relationships – Advanced 

      • Organizational Awareness – Advanced 

      • Learning Agility – Advanced  

      • Analysis – Advanced  

      • Problem Solving – Advanced  

      • Process Orientation – Advanced 

      • Prioritization – Advanced 

      • Customer Service – Proficient 

      • Process Orientation – Advanced 

      • Negotiation - Advanced 

Why Lessen:
·        Competitive compensation
·        Health, Dental, Vision, Life, Disability options
·        401K retirement savings plan
·        Paid vacation, federal and floating holidays
·        Maternity/Paternity Pay
·        Career advancement opportunities
·        All the tools you'll need to be successful

Lessen is intentional about attracting, developing, and retaining amazing talent from diverse backgrounds. We’re looking for teammates that are enthusiastic, empathetic, curious, motivated, reliable, and will help us amplify the positive & inclusive culture we’ve been building.  Lessen is an Equal Opportunity Employer.  All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, protected veteran or disabled status, or genetic information. 

Skills Required

  • PhD or Master's degree in Math, Physics, Statistics, Computer Science, or related field
  • 1-3 years experience as a data scientist working closely within a business
  • Strong mathematical and statistical skills
  • Programming languages: SQL, Python
  • Understanding of ETL tools and database architecture
  • Familiarity with PyTorch and pandas
  • Experience with cloud platforms (AWS, Azure, GCP)
  • Prompt engineering experience
  • Experience using ML frameworks (e.g., scikit-learn, PyTorch)
  • Experience with statistical software (e.g., R, SAS)
  • Experience with natural language processing
  • Advanced knowledge of Data Warehousing and BI best practices
  • Experience with big data tools (e.g., Spark, Hadoop)
  • Experience with Tableau or Superset

What the Team is Saying

Jay Payne
Kirby Pumper
Maya Shea
Jay McKee
Jennifer Gordon
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The Company
HQ: Scottsdale, Arizona
713 Employees
Year Founded: 1999

What We Do

Lessen is the tech-enabled, end-to-end property service provider that is transforming how commercial and residential real estate services are delivered and managed at scale. Lessen’s technology platform provides data-driven insights that unlock key growth opportunities for the entire real estate ecosystem—including investors, owners, managers, and service providers. The company leverages a network of over 30,000 vetted, qualified vendors (Lessen Affiliates) serving clients with over 1 million properties and completing more than 3.5 million work orders annually across an expanding range of services. Lessen, LLC is a venture-backed, privately held company with offices in Scottsdale and Chicago. To learn more, visit Lessen.com.

Why Work With Us

We make caring for and improving properties simpler, faster, better. Powered by tech and perfected by people, we deliver best-in-class, transformational solutions to deliver assets to market faster, keep businesses up and running, and improve customer and resident experiences. We're property services, simplified.

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About our Teams

Lessen LLC Offices

Hybrid Workspace

Employees engage in a combination of remote and on-site work.

At Lessen, managers decide how teams work best—office, home, or hybrid. We value flexibility, connection, and outcomes, investing in tools that keep everyone aligned and focused on delivering great results together.

Typical time on-site: 3 days a week
HQScottsdale, AZ
Chicago, IL
Learn more

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